Sheet



B. H. SPERBBRG.

MOVING PICTURE MACHINE.

APPLICATION FILED DEG. 11I 1909.

961,655, Patented June14,1910.

. s SHEETS-SHEET 1.

E. H. $PERBERG. MOVING PICTURE MACHINE.-

APPLIGATION FILED DEG.11, 1909.

961,655. Patented June '14, 1910.

3 SHEETS-SHEET 2.

B. H SPERBBRG. MOVING PICTURE MACHINE.

APPLICATION FILED DEG.11, 1909.

961,655. I d PatentedJune14,1910.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

EDWABD'H. srnnnnzao, or CHICAGO, ILLINOIS, ASSIGNOB TO THE SELIGroLYsCorE' COMPANY, or CHICAGO, ILLINOIS, ACORPORATION.

]1[0VIN.G-PICTUBE MACHINE.

Specification of Letters "Patent.

Patented June 14, 1910.

Original application filed April 17, 1909, Serial No. 490,465. Dividedand this applieation filed December 11, 1909. Serial No. 532.676.

essary to make provision for cutting off the rays of light from the filmin case of stoppage of the machine, so that the film will not becomeoverheated by being allowed to stand inoperative for any appreciablelength of time, in the rays of light. 'At the present time use is madeof devlces for accomplishing this purpose, but as far as I am aware theyhave always been in the nature of centrifugal shutters of such designthat suflicient reduction of the speed causes them to close the lightopening. It is found, however, that the-use of a device acting in morepositive manner than such shutters is desirable.

The object of the present invention is to provide a more "positivelyacting fire shutter or door than that now used, and one which may beeasily applied to the ordinary type of moving picture machine.

.The' invention consists in the features of construction and combinationof parts here inafter described and claimed.

In the drawings, Figure 1 is an elevation of a moving picture machine ofthe ordinary type, partly in section, having a fire door attache to it,the door being in closed position such 'as it assumes when. the drivinghandle is not completely inserted; Fig.2, a front elevation of suchmoving picture inachine, partly in section, showing the fire door in theopen or operating position which it assumes when the drivin handle hasbeen completely inserted into riving position, and showing also, indotted lines, the position intowhich the door may be thrown for thepurpose of changing the film; Fig. 3, a plan View of such moving picturemachine, partly in section, showin the fire door in closed osition, andshowing also, in dotted lines, t e aperture plate of the machine when ithas been swung out for the purposeof changing or removing the film; andFig. 4,

a side elevation of a portion of the machine, taken on line 5-5 of Fig.3, looking in the direction of the arrow, and showing in detail thelever mechanism for raising andlowering the fire door, the door beingthrown into its uppermost position.

A driving crank 6 is attached to a sleeve 7 which slides upon a drivinshaft 8, the sleeve being provided with a elical groove 9 adapted toengage with a pin .10 on the shaft, so that when the pin is entered intothe groove and the sleeve is rotated the sleeve will be driven inwardlytoward the machine, as shown in Fig. 2. A lever 11 is fulcrumed tothe'frame of the machine ona In 12 by a pin 13, and said lever is provied at its lower end with a collar 14 which surrounds the driving shaft 8and of which the hole is of such size that the collar can move freelyback and forth between the positions shown in Figs. 1 and 2. It isevident that a complete insertion of the driving crank 6 and itsrotation into the driving position will cause the lever 11 to bemovedfrom the Iposition shown in Fig. l to that shown in ig. 2, by reason ofthe engagement -of the sleeve 7 with the'collar 14.

not forced into the driving position of'Fig- 2 the spring 19 will tendto retract the pin 18 into the position of Fig. 1. A fire door :20 isloosely mounted on a shaft 21' (see Figs. 3 and 4) by means of acollar22, and a circular groove 23 formed in the fire door 20 engages with apin 24 carried by a collar 25 which isrigidly attached to the shaft 21.It will be seen that the door 20 may be rotated about the shaft 21 fromthe full line position of Fig. 2 to the dotted line posi tion shown inthe same'figure. The shaft 21 carries rigidly on its inner end a crank26 which is provided at its outer end with a rotatable pin 27, and saidshaft is journaled at 28 to 2. lug 2.9 rigidly attached to the frame ofthe machine. The in 27 is provided with a hole 30 for recelving theupper end of the pin 18. It will thus be seen that the movement of thepin 18 from the position of Fig. 1 to that 0 Fig. 2 will "rotating tcause the lpin 27 to be carried over, thereby thereby uncovering thefilm aperture, as

shown in Fig. 2. The slot 23 is of such size and is so positioned in thefire door that the latter may be rotated; into the position shown indotted lines in Fig. 2, in which position it will remain, and in whichosition the aperture plate 31 willclear the re door and can be swungoutwardly to the position shown ifidotted lines in Fig. 3. However, ifthe driving crank is removed when the fire door-is in the position shownin dotted lines in Fig. 2 the pin 24 will come into contact with thelower end of the slot 23 and will cause the fire door to drop into theclosed position of Fi 1. i

It is evi ent that this deviceis one of reat simplicity, necessitatingtheuse of but few parts, and that it can be applied to many types ofmoving picture machines which are now in use, inasmuch as it does notnecessitate the use of a new shutter, and inasmuch as the parts are ofsuch construction thatthey can be easily ap lied to the ordinary movingpicture mac ine. The 0 rator generally removes the driving han e fromthe machine when not in use, and in this way causes thefire door to beclosed, so that if the light is not turned off the film will not beendangered. Furthermore, a sudden stoppage of driving tendency on thepart of the operator will cause the sleeve 7 to become disengaged fromthe pin 10 by reason of the inertia of the machine carrying the shaft 8for at least a portion ofa revolution.

Although I' have shown the several parts applied to a machine in whichthe aperture plate 31 swings out, as shown in Fig. 3, and

which construction necessitates the special design of the slot 23, stillI do not limit my invention to such desi inasmuch as it is evident thatthe mac ine could be made without an slot whatever, the fire-door '20.

being rigi ly attached to the shaft 21 Other arrangements of leversmight also be employed for transmitting motion from the driving sleeveto the the door, etc., but the fundamental principle of my inventionresides in the combination of means for actuating the fire door by theinsertion or removal of the driving crank or other device used fordriving the machine.

I claim: a

1. The combination of a machine driving e crank 26 and the shaft 21, and

shaft, a pin mounted on said shaft, a driving sleeve for insertion onthe shaft and having therein a slot for cotiperating with the pin, acollar surrounding the shaft and pivoted to the machine frame andadapted tobe contacted bythe driving sleeve, a rotary fire door, and alink mechanism for transmittin motion from the collar to the rotary fireoor, substantially as described.

2. The combination of a machine driving shaft, a pin mounted on theshaft, a drivin sleeve for engaging the driving shaft an having thereina slot for engagmg the pin,

a collar surrounding the driving shaft and pivoted to the machine frameand adapted to be contacted by the driving sleeve, said collar connectedwith a link mechanism, a spring for retracting the link mechanism, arotary fire door, and means connecting the link mechanism with the firedoor, said means adapted to rotate the fire door when the driving sleeveengages the collar, sub-.

stantially as described.

, 3; The combination of a machine driving shaft, a pin mounted on theshaft, a driving sleeve for engaging the driving shaft and havingtherein a slot for engaging the pin, a collar surrounding the drivingshaft and adapted to be contacted by the driving sleeve, said collarconnected with a link mechanism, a spring for retracting the linkmechanism, a rotary fire door loosely mounted on a shaft and havingtherein ,a circular slot, said. shaft connected with the link mechanismby means of a crank, and a pin attached to the shaft and engaging theslot'in the fire door, substantially as described.

4. The combination of. a shaft, a crank pin attached to said shaft, acollar on said shaft, a fire door rotatably mounted on said collar,there being a segmental slot in said fire'door, the crank in beingadapted to engage said slot, and means for rotating said shaft and crankpin when the machine driving mechanism'is inserted or retracted, saidcrank pin adapted to maintain the fire to be rotated away from theaperture door when the machine driving mechanism is inserted,substantially as described.

EDWARD n. SPERBERG.

Witnesses:

MARY R. Fnosr, Tnos. Banmnc, Jr.

